Kinetics of DBU-catalyzed transesterification for biodiesel in the DBU–ethanol switchable-polarity solvent

Autor:	Dongling Xue, Yu Mao, Zhilong Xiu, Tiankui Yang, Ying Mu
Rok vydání:	2014
Předmět:	Solvent Biodiesel Order of reaction Chemistry Yield (chemistry) Biodiesel production Environmental Chemistry Organic chemistry Activation energy Transesterification Pollution Catalysis
Zdroj:	Green Chem.. 16:3218-3223
ISSN:	1463-9270 1463-9262
DOI:	10.1039/c4gc00276h
Popis:	The production of biodiesel from soybean oil and ethanol was investigated in switchable-polarity solvent (SPS) media of DBU and ethanol. The highest biodiesel yield catalyzed by DBU could reach 97.9% under optimized conditions, i.e. ethanol–oil molar ratio: 12 : 1, DBU–oil molar ratio: 2 : 1, reaction temperature: 70 °C, reaction time: 2 h. According to the kinetic analysis, the reaction order of oil was estimated to be 0.7, the apparent activation energy was 16.763 kJ mol−1, the pre-exponential factor was 561.31 mol0.3 mL−0.3 min−1 using the Arrhenius equation for the first time, which explains the high efficiency of the DBU catalyst. The DBU-catalyzed transesterification in the DBU–ethanol switchable-polarity solvent offered an interesting alternative, which would be used to simplify the transesterification and separation to a single step.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e86462363ca45e0e5822ebb6e945c70a https://doi.org/10.1039/c4gc00276h Zobrazit plný text záznamu